First on-line application of the high-resolution spectroscopy laser ion source PI-LIST at ISOLDE

We report on the development, characterization, and first application of a specialized resonance ionization laser ion source for high-resolution spectroscopy applications below usual hot cavity Doppler broadening limitations, for on-line experiments at CERN-ISOLDE. The new PI-LIST ion source compris...

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Bibliographic Details
Published in:	Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms Vol. 541; pp. 8 - 12
Main Authors:	Heinke, Reinhard, Au, Mia, Bernerd, Cyril, Chrysalidis, Katerina, Cocolios, Thomas E., Fedosseev, Valentin N., Hendriks, Isabel, Jaradat, Asar A.H., Kaja, Magdalena, Kieck, Tom, Kron, Tobias, Mancheva, Ralitsa, Marsh, Bruce A., Marzari, Stefano, Raeder, Sebastian, Rothe, Sebastian, Studer, Dominik, Weber, Felix, Wendt, Klaus
Format:	Journal Article
Language:	English
Published:	Elsevier B.V 01-08-2023
Subjects:	Accelerator Physics and Instrumentation Acceleratorfysik och instrumentering Fysik Isomer selection Laser spectroscopy Natural Sciences Naturvetenskap Physical Sciences Radioactive ion beams Resonance ionization laser ion source Isomer selection Radioactive ion beams Laser spectroscopy Resonance ionization laser ion source
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Summary:	We report on the development, characterization, and first application of a specialized resonance ionization laser ion source for high-resolution spectroscopy applications below usual hot cavity Doppler broadening limitations, for on-line experiments at CERN-ISOLDE. The new PI-LIST ion source comprises perpendicular laser/atom beam interaction in a radio-frequency quadrupole unit directly downstream the hot atomizer cavity. A spectral linewidth of 200–300MHz is demonstrated, with the potential to achieve below 100MHz. Compared to standard in-source laser ionization, the efficiency reduction factor ranges from a few 100 to above 1000. The implementation of this ion source concept at thick target radioactive ion beam facilities will greatly enhance capabilities for nuclear structure investigations without demanding dedicated experimental beam line setups, and will facilitate the delivery of isomer-pure beams to experimental stations.
ISSN:	0168-583X 1872-9584
DOI:	10.1016/j.nimb.2023.04.057